Human Impact

Climate

average weather conditions of a large area over a long period of time, and involves temperature, rainfall and pressure

Climate change

any change or disturbance to an established climate

Greenhouse effect

warming of earth’s surface by greenhouse gases trapping heat in the atmosphere

Ozone depleting substances

substances that are stable and environmentally friendly in the lower atmosphere, which cause them to move upwards into the stratosphere where it gets broken down by UV rays which release Chlorine and/or Bromine, which decay the stratospheric ozone

Global warming

increase in earth’s temperature as a result of enhanced greenhouse effect

Deforestation

the permanent destruction of natural indigenous trees or shrubs by felling or burning in order to clear for other purposes

Dessertification

the process by which semi-arid or arid land is formed into a desert

Water aquafier

underground layer of water bearing permeable rock that stores and/or transfers ground water to supply wells, boreholes and springs with water

Food security

All people in the country have physical and economic access to safe, healthy and nutritious food to meet their nutritional needs for an active and healthy lifestyle at all time of the day